Multiple postal service employees were medically evaluated for possible exposure to the unexplained odor at the facility in Hamilton Township, but it was not clear if they had been sickened, Postal Service spokesman Ray Daiutolo said.
Read: KFC delivers to Dubai beach by helicopter
Hazmat responders searched and cleared the building, Daiutolo said. An investigation into the smell is ongoing.
"The Postal Service will continue to work with authorities to complete any additional investigations necessary to ensure the safety of our employees, customers and mail," Daiutolo said in a statement
The building was one of several in the area targeted in anthrax attacks in 2001, news website NJ.com reported.
Read: Oklahoma school concerned over dancing dead cats video
Aerial footage of the site on Friday showed workers in yellow hazmat suits canvassing the parking lot, where dozens of mail delivery trucks were parked.
Local police and fire officials could not be reached for comment.
COMMENTS
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ